Go vo vo now ,as bumping fist is the safest method to say HI .We came across many people and we do shake hand in addition to it exchange germs too.As we are just unaware of hygiene of anyone .
So ,researchers found that bumping fist is the safest method ,study shows in Aberyswth university in west Wales. It is even better than high fives .
Our hands carry many germs and most common of them E.coli and streptococcus . So practice this and live a Germfree life and goodbye to frequent use of hand sanitiser.